Proper return types for win32 functions.

ctypes functions return c_int by default, which is wrong here.
unpack_from exists.
Version bump.

I was going to wait until after I got AtheOS/Syllable working to do this
because I've been doing it a lot, but even the uptime(1) that ships with
Syllable is broken and none of the available Python packages (binary and
source) have a working ctypes.
http://i.imgur.com/qOYA5r4.png